过了今晚,就删除了啊!所以快进哪!

都含“害怕的”意思.
1 afraid 不能做定语(其它四个词都可以做定语),它多用于习惯经常地“惧怕”某事物,泛指一种“恐惧心理”,如:
I'm afraid of a dog.
我怕狗.
2 frightened 指一种“强烈的、突然的恐惧”,其经历时间较短,如:
He was frightened out of life.
他吓得要命.
3scared
adj.
吃惊的,吓坏的
[方](=afraid)怕,不敢
a scared look
吃惊的面孔
I'd be scared to do that.
[方]我怕做那件事.
4 scarey
adj.
引起惊慌的

scared=scary害怕的,恐怖的

scared
adj.
吃惊的, 吓坏的
[方](=afraid)怕, 不敢
a scared look
吃惊的面孔
I'd be scared to do that.
[方]我怕做那件事。
scary

adj.
(马等)易受惊的, 胆怯的
吓人的, 可怕的...